The principal problem is that deforestation occurs not only in one place, but all over the world. And it happens because some people anxious about their own problems and themselves, unfortunately not about environmental issues. It seems to me that all this starts because they do not want to accept these factors(even if they know that this is not at all correct) and continue to do similar actions that injure the surrounding nature. As a result, the state of natural atmospheric space collapses and it will be arduous to produce oxygen. For example, due to the lack of trees, the air becomes not clean and in the end, it directly influences to human, animal health.
A solution to this worrying problem to improve the protection of forest sites, fine for each tree felling, or a strict law is needed. If each guilty person will be punished for what he did and it would be much better if this person after the punishment will be under control. Then other people will look at it and I think they will not repeat these actions. And also need to show on TV who cut down the trees. For instance, many people watch TV and news in this and they believe in what in TV shows and says, in my opinion they will think about it and will not do deforestation.
In summary, one of the main problems of deforestation is lack of strict, precise law. In the end, all the same must obey the law and in modern society everything is decided by law. It is the predicted, that if law will be exigent, then people will come more responsible than before. 
The principal  
problem
 is that deforestation occurs not  
only
 in one place,  
but
 all over the world. And it happens  
because
  some
  people
 anxious about their  
own
  problems
 and themselves, unfortunately not about environmental issues. It seems to me that all this  
starts
  because
 they do not want to accept these factors(even if they know that this is not at all correct) and continue to do similar actions that injure the surrounding nature.  
As a result
, the state of natural atmospheric space collapses and it will be arduous to produce oxygen.  
For example
, due to the lack of trees, the air becomes not clean and in the  
end
, it  
directly
 influences to human, animal health.
A solution to this worrying  
problem
 to  
improve
 the protection of forest sites, fine for each tree felling, or a strict  
law
  is needed
. If each guilty person will  
be punished
 for what he did and it would be much better if this person after the punishment will be under control. Then other  
people
 will look at it and I  
think
 they will not repeat these actions. And  
also
 need to  
show
 on TV who  
cut
 down the trees.  
For instance
,  
many
  people
  watch
 TV and news in  
this and
 they believe in what in TV  
shows
 and says, in my opinion they will  
think
 about it and will not do deforestation.
In summary, one of the main  
problems
 of deforestation is lack of strict, precise  
law
. In the  
end
, all the same  
must
 obey the  
law
 and in modern society everything  
is decided
 by  
law
. It is the predicted, that if  
law
 will be exigent, then  
people
 will  
come
 more responsible than  
before
.